This page summarises the information held within TEPCat for the transiting planetary system HATS-78. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:2608.05500 | |
| Date of discovery paper | 2026 / 8 / 7 | y / m / d |
| Data/telescope used for discovery | HATS | |
| Right ascension | 19 27 28.05 | h m s |
| Declination | −62 05 41.4 | d m s |
| Right ascension (decimal) | 291.86687 | degrees |
| Declination (decimal) | -62.09483 | degrees |
| V-band apparent magnitude | 14.18 | mag |
| K-band apparent magnitude | 12.49 | mag |
| Transit duration | 0.10 ( 2.4 ) | day hour |
| Transit depth | 0.7 | % |
| Time of mid-transit | 2458680.8134 ± 0.0015 | HJD or BJD |
| Orbital period | 3.246456 ± 0.0000045 | days |
| Reference for orbital ephemeris | arXiv:2608.05500 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5720 +89 −91 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.04 ± 0.14 | dex |
| Stellar mass | 1.04 +0.09 −0.10 | Msun |
| Stellar radius | 1.39 ± 0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.26 ± 0.08 | c.g.s. |
| Stellar mean density | 0.385 ± 0.036 ( 0.543 ± 0.051 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.043 +0.002 −0.00 | AU |
| Planetary mass | 0.30 ± 0.07 ( 95 ± 22 ) | Mjup Mearth |
| Planetary radius | 1.24 ± 0.04 ( 13.90 ± 0.45 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 | |
| Planetary mean density | 0.158 ± 0.038 ( 0.210 ± 0.050 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1561 ± 35 | K |
| Reference of detailed study | arXiv:2608.05500 |
HATS-78 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/08/12 John Southworth (Keele University, UK)